In the desert food web shown below, which of the following best describes the transfer of energy between the lubber grasshopper and the kangaroo rat?
A) About 90 percent of the kangaroo rat's energy transfers to the lubber grasshopper.
B) About 10 percent of the lubber grasshopper's energy transfers to the kangaroo rat.
C) About 10 percent of the kangaroo rat's energy transfers to the lubber grasshopper.
D) About 90 percent of the lubber grasshopper's energy transfers to the kangaroo rat.
Answers
Answer:
B
Explanation:
The correct option is B.
The kangaroo rat receives only about **10 percent** of the lubber grasshopper's energy in this desert food web.
In the desert food web depicted, the transfer of energy between the **lubber grasshopper** and the **kangaroo rat** follows a specific pattern. Let's break it down:
1. **Lubber Grasshopper**:
- The lubber grasshopper is a primary consumer in this food web. It feeds directly on **desert grasses**.
- As it consumes the grasses, it gains energy through the process of photosynthesis that occurred in the plants.
- However, not all of this energy is transferred to the lubber grasshopper. Due to metabolic processes and heat loss, only a fraction of the energy is retained.
2. **Kangaroo Rat**:
- The kangaroo rat is a secondary consumer. It preys on the lubber grasshopper.
- When the kangaroo rat consumes the grasshopper, it obtains some of the energy stored in the grasshopper's body.
- Again, only a portion of the grasshopper's energy is transferred to the kangaroo rat. The rest is lost as heat or used for the rat's own metabolic needs.
3. **Energy Transfer**:
- The transfer of energy from one trophic level to another (from grasses to grasshopper to kangaroo rat) is not efficient.
- Typically, only about **10 percent** of the energy moves up each trophic level in a food chain or web.
- Therefore, the correct answer is **B) About 10 percent of the lubber grasshopper's energy transfers to the kangaroo rat**.
In summary, the kangaroo rat receives a small fraction of the energy originally captured by the lubber grasshopper. This energy transfer inefficiency is a fundamental characteristic of ecosystems, and it highlights the importance of maintaining balanced food webs to sustain life in desert habitats.
Related Questions
Of 111 prisons, only _________ have complete air conditioning.
Answers
Penitentiaries managed by the Texas Department of Criminal Justice only 21 out of 111 offer full air conditioning to its convicts. Last summer, four prisoners pass away from heat stroke or hypothermia. This was according to New York Times on June 26, 2012.
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Answers
___________________________________________________
Final answer:
The parietal lobe, specifically the visual association cortex areas V2 and V3, is responsible for visual-spatial functions and awareness, working with the ventral and dorsal streams for complex visual processing.
Explanation:
The area of the cortex responsible for visual-spatial functions and awareness is the parietal lobe, specifically within the regions known as the visual association cortex. This area encompasses Brodmann's areas, such as area V2 and V3, which surround the primary visual cortex (area V1). The visual association cortex develops more complex visual perceptions by adding color and motion information and coordinates with the temporal and parietal lobes through two separate streams of processing: the ventral and dorsal streams. The ventral stream identifies visual stimuli and their significance, while the dorsal stream accurately locates objects in space and assists in guiding bodily movements in response to visual inputs.
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Answers
DNA replication occurs in the two major types of cell division: mitosis and meiosis.
Mitosis is the splitting of a normal cell into two daughter cells and involves complete replication of the cells DNA to produce two identical copies. Meiosis is a specialised and more complex two-stage form of cellular division related to sex cells and involves DNA replication followed by an exchange of DNA material within/between the chromosomes to mix genes from both parents and produce daughter cells with half the number of chromosomes as the original parent cell. Animal sperms and eggs are examples of cells produced by meiosis and contain half the number of chromosomes as normal cells. When combined during fertilization the egg and sperm produce a cell with the full compliment of chromosomes.
Cytokinesis is a part of the cellular life cycle that is related specifically to the division of the cytoplasm (basically the "soup" of material inside the cell). It is part of the cellular division process but not specifically related to nuclear division (i.e. DNA replication).
Transcription relates to the production of RNA from DNA which is then used for protein synthesis. DNA is not replicated during the transcription process, rather, this is a separate process critical for the production of proteins by the cell.
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Several research studies on fraternal and identical twins have reported that identical twins have equal chance of developing alzheimer's disease. This is also true for emotional instability.
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They receive info from general sensory receptors in skin.
If the total amount of energy in the producer level ecosystem is 40,000 kilocalories how much energy is available for the first level consumers?
Answers
Answer:- 4,000 kilo-calories.
Step-to-step-explanation:-
We know that the ten percent rule says that when energy is passed in an ecosystem from one tropic level to the next then only ten percent of the energy will be passed on.
Given: The total amount of energy in the producer level ecosystem = 40,000 kilo-calories.
Then, the amount of energy in the first level = [10% of 40,000] kilo-calories.
⇒ The amount of energy in the first level =[tex]0.01\times40,000[/tex] kilo-calories.
⇒ The amount of energy in the first level = 4,000 kilo-calories.
which fitness activity is characterized by constant pushing and pulling against resistance? rowing cross-country skiing swimming cycling stair climbing
Answers
Answer:
Option A
Explanation:
In Rowing a person pushes or pulls the paddle against the resistance of machine belt
In Gyms , a rowing machine is used for rowing which is a form of cardiovascular exercise that enhances the muscle strength and shape there by making it large and lean.
The work out of upper and lower body is done perfectly by rowing and also it increases the endurance capacity and strength of the body
Hence, option A
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products.DNA from a crime scene can be compared to DNA from a suspect.DNA typing can be used to solve old cases. this is what you need to write.
Forensic science is a branch of science that uses collected evidence to solve the case it can include the collection of DNA, blood samples, fingerprints etc.
How DNA can be used in solving crimes?DNA or the genetic material of every individual is different and unique. The region that varies in individuals can be employed in forensic sciences to solve the case.Crimes can be solved by DNA profiling that includes matching samples with the suspects or through a DNA database. Samples of hair, blood or hair at the crime scenes can be used for DNA extraction and profiling.Thus, variable sequences of DNA can be used in solving crimes.
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cytoplasm
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Answers
Final answer:
All cells have a plasma membrane, cytoplasm, and protoplasm. Not all cells have a cell wall, nucleus, large vacuoles, or chloroplasts; these features vary depending on the cell type (eukaryotic or prokaryotic).
Explanation:
All cells have certain components in common. These include:
An outer membrane or plasma membrane: This is a common feature that separates the cell's interior from its surrounding environment.Cytoplasm: A jelly-like substance within the cell where cellular components are embedded.Protoplasm: This term encompasses both the cytoplasm and the nucleus of the cell, including all other components within the plasma membrane.Ribosomes: Present in both prokaryotic and eukaryotic cells, these synthesize proteins.Some structures are not shared by all cells:
A cell wall: While many cells, such as plant cells, do have a cell wall, not all cells, such as animal cells, include this layer.A nucleus: Present in eukaryotic cells but absent in prokaryotic cells.Large vacuoles: Common in plant cells but not typically found in animal cells.Chloroplasts: These are found in plant cells and other photosynthetic organisms but not in animal cells.I NEED HELP QUICK, PLEASE !!
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Cells are the most simplistic structures of the human body. They're like the building blocks of you're whole body!
I hope this helped you! :)
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Which of the following is NOT a benefit of GMOs They can resist disease. They require less fertilizer. They grow faster. They create superweeds.
Answers
Answer: They create superweeds
Explanation:
The creation of superweed by genetically modified plants is not a benefit of GMOs. Superweed can be defined as the weeds that has become resistant to the effect of herbicides.
These weeds have become a problem for farmers as they occupy the space and nutrient and are also not removed by herbicide.
These weeds are produced by the genetically modified plants and crops which is not a benefit of it.
The one that is NOT a benefit of GMOs is they create superweeds and the correct option is option 4.
Genetically modified organisms (GMOs) offer several potential benefits. They can increase crop yield by making plants resistant to pests, diseases, and environmental stressors. This can help address food security challenges and reduce reliance on chemical pesticides.
GMOs can also be engineered to have enhanced nutritional value, addressing nutrient deficiencies in certain populations. They may require less fertilizer and water, contributing to more sustainable agricultural practices.
Additionally, GMOs can extend the shelf life of crops, reducing food waste. However, it is important to consider potential risks, such as environmental impacts and the need for proper regulation and safety assessments to ensure the responsible and ethical use of GMO technology.
Thus, the ideal selection is option 4.
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Classification in biology is ever-changing due to increased understanding of microorganisms, advancements in genetic analysis, and the limitations of existing classification systems. It is constant work to accurately portray organisms' relationships and their true evolutionary history. This is illustrated in the example of the prokaryotic species splitting into Archaea and Bacteria.
Explanation:Classification in biology is subject to change due to our continuously evolving understanding of organisms. This is particularly evident in our ever-changing comprehensions of microorganisms and phylogenetic modeling concepts, as well as advancements in genetic analysis. Many disciplines within biology, including fossil study, DNA analysis, and the study of body part structures, all contribute to building and updating the "tree of life" or, in other words, the classification system used for organisms.
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